Car Relay

Make sure it s labeled 87.

Car relay. A car relay is a electro magnetic switch that uses a small amount of current to control a larger amount of current. This is not the pin you want. If it works then the supply is faulty and the fault will be in the relay or the connections to it. Sometimes the relay vibrates out or works loose.

Most car relays pull out of a socket. Typically the relay is switched manually using push or toggle switch an everyday example of this is the car ignition switch used to start the engine. Try pulling it out and pushing it back in to fix the problem. Electrical wiring products parts and accessories for vintage and classic cars.

On a standard bosch relay there is also a pin labeled 87a. Add to compare list add to wishlist. An explanation of automotive electrical relays and how they work using a small current to switch a larger load without running heavy cables to heavy duty sw. Although there are various relay designs the ones most commonly found in low voltage auto and marine applications are electro mechanical relays that work by activating an electromagnet to pull a set of contacts to make or break a circuit.

A changeover relay is built with two circuits instead of one and five pins rather than four. What is a relay. If a component that is fed with electricity through a relay see how car electrical systems work terminal of the battery to the feed terminal on the component thereby bypassing the relay and supply wiring. For switching off screen demist after a timed period.

If the component still does not work it is faulty. How they work is by a wire wound magnetic coil that when excited by a electric current moves a mechanical spring contact inside the relay completing a circuit.